Actions
All four quadriceps are powerful extensors of the knee joint. They are crucial in walking, running, jumping and squatting. Because rectus femoris attaches to the ilium, it is also a flexor of the hip. This action is also crucial to walking or running as it swings the leg forward into the ensuing step. The quadriceps, specifically the vastus medialis, plays the important role of stabilizing the patella and the knee joint during gait.
Read more about this topic: Quadriceps Femoris Muscle
Famous quotes containing the word actions:
“Now they express
All that’s content to wear a worn-out coat,
All actions done in patient hopelessness,
All that ignores the silences of death,
Thinking no further than the hand can hold,
All that grows old,
Yet works on uselessly with shortened breath.”
—Philip Larkin (1922–1986)
“One will seldom go wrong in attributing extreme actions to vanity, moderate ones to habit, and petty ones to fear.”
—Friedrich Nietzsche (1844–1900)
“However, our fates at least are social. Our courses do not diverge; but as the web of destiny is woven it is fulled, and we are cast more and more into the centre. Men naturally, though feebly, seek this alliance, and their actions faintly foretell it.”
—Henry David Thoreau (1817–1862)